The Four Seasons frontman, who turns 79 May 3, will play a club owner in the story about a self-centered, eccentric real estate agent whose life is turned upside down when his estranged son drops off a granddaughter he never knew he had.
The realtor, played by Douglas, eventually learns -- with the help of a determined, lovable neighbor played by Keaton -- to care and, to his surprise, fall in love again.
Mark Andrus, whose credits include "As Good as It Gets" and "Divine Secrets of the Ya-Ya Sisterhood," wrote the "And So It Goes" screenplay.
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